Being written by physicists, and primarily for physicists, it naturally includes not only
the ordinary theory of the deformation of solids, but also some topics not usually found in
textbooks on the subject, such as thermal conduction and viscosity in solids, and various
problems in the theory of elastic vibrations and waves. On the other hand, we have
discussed only very briefly certain special matters, such as complex mathematical
methods in the theory of elasticity and the theory of shells, which are outside the scope of
this book.